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<p>The high-temperature corrosion behavior of Ni-35Fe and Ni-65Fe alloys embedded in sand containing 0%, 0.1%, or 1% of NaCl-KCl-CaCl<sub>2</sub> salt mixture at 480 °C in air was investigated. The growth rate of the iron oxide scale was found to be controlled by diffusion within the Ni-35Fe and Ni-65Fe alloys matrix. Internal oxidation and chlorination of Fe were observed in sand with salt contents of 0.1% and 1%. Chloride salts increased the growth rate of the iron oxide scale on the Ni-35Fe and Ni-65Fe alloys.</p>

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High-Temperature Corrosion Behavior of Ni-35Fe and Ni-65Fe Alloys Embedded in Silica Sand Containing NaCl-KCl-CaCl2 Salts at 480 °C

  • 期刊论文

  • 发表日期：

    2025年9月6日

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  • Cong Li,
  • Suzue Yoneda,
  • Takashi Kogin,
  • Eiji Ishikawa,
  • So Murasue,
  • Shigenari Hayashi

摘要

The high-temperature corrosion behavior of Ni-35Fe and Ni-65Fe alloys embedded in sand containing 0%, 0.1%, or 1% of NaCl-KCl-CaCl2 salt mixture at 480 °C in air was investigated. The growth rate of the iron oxide scale was found to be controlled by diffusion within the Ni-35Fe and Ni-65Fe alloys matrix. Internal oxidation and chlorination of Fe were observed in sand with salt contents of 0.1% and 1%. Chloride salts increased the growth rate of the iron oxide scale on the Ni-35Fe and Ni-65Fe alloys.